Is Queen: Imitation Vanilla Gluten Free?

I'm trying to make cupcakes for a friend with coeliac disease (i.e can't have gluten). I'm afraid I don't know much about the world of gluten, but I'm pretty sure this will be okay. But does anyone know for sure this product is gluten free?

Also, this is imitation vanilla, not vanilla extract or essence. I've heard vanilla essence is okay, but my stupid grocery store didn't stock it!

ingredients:
- water
- imitation vanilla flavours
- colour (150d)
- preservative (202)
- food acid (330)

Thanks!